TippingPoint Zero Day Initiative

Apple Quicktime PICT File PackBitsRgn Parsing Heap Corruption Vulnerability

ZDI-07-066: November 5th, 2007


Affected Vendors

Affected Products

Vulnerability Details

This vulnerability allows attackers to execute arbitrary code on vulnerable installations of Apple QuickTime. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exist in the parsing of the PackBitsRgn field (Opcode 0x0099). Due to improper handling of a malformed element in the structure, heap corruption occurs. If properly constructed this can lead to code execution running under the credentials of the user.

Vendor Response

Apple has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2007-09-14 - Vulnerability reported to vendor
    2007-11-05 - Coordinated public release of advisory


This vulnerability was discovered by:
    Ruben Santamarta of reversemode.com